Builds tools/run_regression.py (no reproducible regression script existed
before -- every prior "N testbenches, all pass" claim was assembled by
hand). Resolves each testbench's dependencies by static analysis of
instantiation sites, not from memory, then compiles+runs everything fresh.
Independently re-verifies the 33-testbench regression clean (0 real
failures) after fixing two false negatives in the harness itself (two
tests are deliberate compile-time-failure negative tests, one file is a
benchmark with no pass/fail verdict by design -- confirmed by reading
each file's own header, not assumed).
Findings recorded in docs/validation/: sim/top.v is dead code (references
a removed FRAC_BITS parameter from the pre-INT8 Q8.8 era); mac_unit.v/
mac8.v have no dedicated unit testbench, only indirect coverage; the
N_INPUTS%PARALLEL elaboration guard does not mathematically cover
N_INPUTS=0 (open finding, not yet confirmed reachable -- BUG-002).
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_013xXuuRUWZScuo1DeYJxs3v
